Anyone can be a contributor. You can ask and answer questions without a membership, but if you want an ad-free experience you can join (it's free).
No, although some of the contributors are very fake with their so-called credentials on the subjects they answer about.
You cannot close an answer on answers.com from being changed by the other contributors and supervisors.
because the inventor of answers.com thought of that name and it has answers.com because you can answer questions....
no.
You can't
no.
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2005.
it does.
cash
You can not do that from Kindle.
yes.